Email verifier for Outreach and Salesloft

Verifying the same prospect volume every month, by vendor

Lowest published route for that many checks every month, read from each vendor's pricing page. Ours is Pro: the first 100,000 checks a month at full speed, then slower, never cut off. Vendor prices read 12 Oct 2026 to 5 Nov 2026. Each vendor links to its comparison page, which records the date its prices were read. Check their site for current pricing before you buy.

SimpleVerifier facts: prices, packs and limits

What it is

Email verification with a real SMTP mailbox check: each address comes back valid, risky or invalid with a reason. Includes an email finder on Pro and up.

Price per check

Starter $9/mo for 2,500 ($3.60 per 1,000); Pro $39/mo, 100,000 a month at full speed ($0.39 per 1,000 when used), then slower, never cut off. Business $99/mo with 300,000 at full speed; Agency $249/mo with 750,000 at full speed.

One-time packs

10,000 for $15 ($1.50 per 1,000); 25,000 for $29 ($1.16 per 1,000); 50,000 for $49 ($0.98 per 1,000); 100,000 for $79 ($0.79 per 1,000); 250,000 for $169 ($0.68 per 1,000). Credits never expire, run at standard speed, CSV verification only (no API or finder).

Free checks

First 100 email checks free with a Google sign-in, no card, once per account. Single checks on the free email checker need no account.

Billing

Monthly subscription, cancel anytime (yearly billing optional). One-time packs are listed above. Starter allowances reset monthly and do not roll over.

Speed today

One sending IP today, shared by every customer: about 13,000 mailbox checks a day in the standard lane. Bad syntax, dead domains and disposable addresses return at once; a list of 100,000 takes days, not hours, and each job shows its estimated finish time.

Catch-all handling

Catch-all (accept-all) addresses stay risky, never valid, and are graded higher, medium or lower likelihood with the reasons. Anything a mail server does not confirm is risky.

API and MCP

REST API on Pro, Business and Agency (Pro includes 10,000 calls a month, then $1.50 per 1,000). Remote MCP server with 6 tools for Claude, ChatGPT, Cursor and VS Code. No API on Starter.

Integrations

Connects to Instantly, Smartlead, HubSpot and Mailchimp by API key: verifies a campaign or list and tags each contact with its result. CSV in and out for any other tool.

Phone

Free phone format checks (country, type range). Live carrier and line-type lookups come with Pro + Phone at $49.99/mo (5,000 a month). It never says a number is in service.

Privacy and GDPR

Data processing agreement countersigned on request (/dpa). Results files deleted 7 days after a list is submitted; confirmed results cached by address for 14 days. Lists are not used for marketing, sold or shared. Verification runs on a US server. No GDPR certification is claimed.

What it does not do

No sending, warmup or inbox placement tests. No published accuracy benchmark against other verifiers. Catch-all domains, Yahoo and AOL cannot be confirmed, and Outlook.com and Hotmail mailboxes are not probed while Microsoft refuses checks from our server's network: all of these come back risky, never valid.

SimpleVerifier facts from our pricing page and product. Last updated November 8, 2026.

Outreach

Export prospects from the Prospects view; the Outreach export guide has the steps, from Outreach's own help centre. After verifying, import the valid file with Bulk Create; Outreach keeps one prospect per email address. The ZoomInfo to Outreach workflow covers the column mapping.

Salesloft

Export from the People page; the export follows your active filters, and Salesloft emails you a link to the CSV. The Salesloft export guide has the steps. Upload that file as it is: the email column is found automatically.

What to do with each result

Import valid. Remove invalid, or mark them do-not-contact so they are not re-imported later. Risky covers catch-all domains, which are common in B2B lists, and providers that will not confirm a mailbox; put them in a separate, slower cadence or leave them out.

Mailshake and Klenty work the same way; see the Mailshake export guide. Teams that share one account can use Business ($99 a month, 5 seats).

When another option is the better pick

• You need verification to run inside Outreach or Salesloft with no export. We do not ship a connector for either.
• Your prospects come from a data provider that already verifies at export and you import nothing else.
• A vendor in the table costs less at your monthly volume.

Common questions

Does SimpleVerifier integrate with Outreach or Salesloft?

Not natively. Export the prospects as a CSV, verify the file, and import the valid file back. Native connectors exist for Instantly and Smartlead.

Which results should go into a sequence?

Valid only, at full volume. Keep invalid out entirely, and send risky (mostly catch-all) in a separate, slower cadence or not at all, so a bounce lands on as few mailboxes as possible.

How long does verification take?

A list of 10,000 can take from a few hours to a day or more, depending on the queue. The job card shows the estimated finish time, and you can close the tab.